XcmsColorSpace()XcmsColorSpace()NameXcmsColorSpace – Xcms color space structure.
Availability
Release 5 and later.
Description
The XcmsColorSpace structure contain the information necessary to con‐
vert the encoding of color specifications to other color spaces, and to
parse a color string encoded specifically for this color space.
The prefix member points to a string that identifies that a color
strings encoding is for this particular color space.
<color_space>:<color_space_specific_encoding>
For example, the prefix "cieuvy:" for the color string
"CIEuvY:0.119/0.545/0.254". Although the prefix in the color string
may be entered in uppercase or lowercase, all characters of the prefix
specified in the XcmsColorSpace must be in lowercase.
The id member is predefined if the color space is registered with the X
Consortium; otherwise assigned at run-time (see XcmsAddColorSpace()).
The parseString member points to the color space specific string pars‐
ing function.
The to_CIEXYZ member is pointer to an array of functions that, when
executed in sequence, will convert a XcmsColor structure encoded for
this color space to the CIEXYZ encoding.
The from_CIEXYZ member is pointer to an array of functions that, when
executed in sequence, will convert a XcmsColor structure encoded for
CIEXYZ to this color space's encoding.
The inverse_flag member if set (i.e., 1) indicates that for each func‐
tion in the to_CIEXYZ list, there is an inverse function in the
from_CIEXYZ list. Note however that the corresponding order is
reversed - the inverse of the first function in to_CIEXYZ will be the
last function in from_CIEXYZ.
Structures
The XcmsColorSpace structure contains:
typedef XcmsConversionProc *XcmsFuncListPtr;
typedef struct _XcmsColorSpace {
char *prefix;
XcmsColorFormat id;
XcmsParseStringProc parseString;
XcmsFuncListPtr to_CIEXYZ;
XcmsFuncListPtr from_CIEXYZ;
int inverse_flag;
} XcmsColorSpace;
See AlsoXcmsAddColorSpace(), XcmsAddFunctionSet(), XcmsFunctionSet, XcmsConver‐
sionProc, XcmsParseStringProc.
Xlib - Device-independent Color XcmsColorSpace()
